Summary of Operations and Significant Accounting Policies - Schedule of fair value of financial instruments that were measured at fair value on a recurring basis (Detail) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	$ 563,316	$ 57,632
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure	2,447	1,828
Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	207,268	57,632
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure	2,447	0
Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	356,048	0
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	0	0
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure	0	1,828
Short-Term Investments [Member] \| Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	51,889	0
Short-Term Investments [Member] \| Fair Value, Inputs, Level 1 [Member] \| Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	51,889	0
Short-Term Investments [Member] \| Fair Value, Inputs, Level 2 [Member] \| Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	0	0
Short-Term Investments [Member] \| Fair Value, Inputs, Level 3 [Member] \| Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	0	0
Money Market Funds [Member] \| Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	27,444	6,157
Money Market Funds [Member] \| Fair Value, Inputs, Level 1 [Member] \| Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	27,444	6,157
Money Market Funds [Member] \| Fair Value, Inputs, Level 2 [Member] \| Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	0	0
Money Market Funds [Member] \| Fair Value, Inputs, Level 3 [Member] \| Cash Equivalents [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	0	0
U.S. Treasury securities \| Available-for-Sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	127,935	12,076
U.S. Treasury securities \| Fair Value, Inputs, Level 1 [Member] \| Available-for-Sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	127,935	12,076
Corporate debt securities \| Available-for-Sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	356,048	39,399
Corporate debt securities \| Fair Value, Inputs, Level 1 [Member] \| Available-for-Sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	0	39,399
Corporate debt securities \| Fair Value, Inputs, Level 2 [Member] \| Available-for-Sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	356,048	0
Corporate debt securities \| Fair Value, Inputs, Level 3 [Member] \| Available-for-Sale Securities [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure	0	0
Contingent Obligation [Member]
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure	2,447	1,828
Contingent Obligation [Member] \| Fair Value, Inputs, Level 1 [Member]
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure	2,447	0
Contingent Obligation [Member] \| Fair Value, Inputs, Level 2 [Member]
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure	0	0
Contingent Obligation [Member] \| Fair Value, Inputs, Level 3 [Member]
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure	$ 0	$ 1,828

Summary of Operations and Significant Accounting Policies - Schedule of fair value of financial instruments that were measured at fair value on a recurring basis (Detail) - Fair Value, Recurring [Member] - USD ($)
$ in Thousands